JPH053676Y2

JPH053676Y2 -

Info

Publication number: JPH053676Y2
Application number: JP1984102021U
Authority: JP
Priority date: 1984-07-06
Filing date: 1984-07-06
Publication date: 1993-01-28
Also published as: JPS6120799U

Description

【考案の詳細な説明】この実用新案は、上部が狭く、下部が広い梯形
の２個の梯子枠が、斜めの脚柱側を軸として開脚
するように、脚柱と脚柱を蝶番で取り付ける。そ
して開脚した時は自立が出来る三角錐型の様な脚
立となり、乗降は蝶番で接続された２本の脚柱側
を正面として据付け、脚柱をまたぎながら、左右
の梯子枠の踏み板を足で交互に踏んで行う。この
様に構成され四点支持の脚立である。[Detailed description of the invention] This utility model consists of two ladder frames that are narrow at the top and wide at the bottom. Attach. When the legs are opened, it becomes a triangular pyramid-shaped stepladder that can stand on its own, and when getting on and off, the two pillars connected by hinges are installed with the front side facing forward. Step on it alternately. This is a four-point support stepladder.

従来あつた脚立は、はしごの形をしたわくの最
上部の横ざんを軸として前後に開くようにしてい
た。 Conventional stepladders have a ladder-shaped frame that opens forward and backward using the horizontal slats at the top of the ladder as an axis.

しかしこの場合の欠点は、 (イ) 脚柱が４本足となるため地面や床が少しでも
水平でないと脚立がゆれて安定しなかつた。 However, the disadvantages of this case are: (a) Since the pedestal has four legs, if the ground or floor is not even slightly level, the stepladder will sway and become unstable.

(ロ) 開脚する方向には倒れにくいが、その直交方
向には倒れやすかつた。(b) It was difficult to fall in the direction where the legs were spread, but it was easy to fall in the direction perpendicular to that direction.

以上のような大きな欠点があつた。There were major drawbacks as mentioned above.

そこで改良されたのが本案であり、これを図面
によつて説明すれば、 (イ) 第１図の様に２個のはしご状のわくのたて材
を脚柱１としその片方づつを、ちようばん２に
より互に接合させて、脚柱を軸に開脚する３点
支持の様な脚立にする。 Therefore, the present proposal was improved, and this can be explained using drawings. (a) As shown in Figure 1, two ladder-shaped frame vertical members are used as pillars 1, one of which is They are joined to each other by the chiyoban 2 to form a stepladder with three-point support, with the legs spread around the pillar.

(ロ) 横ざんは昇降するために踏み板３にする。(b) The horizontal crossbeam will be used as a step board 3 for going up and down.

(ハ) 脚立の裏側には開き止め４をつける。(c) Attach a stopper 4 to the back of the stepladder.

その他に関係するものとして、従来の３脚はし
ごがあるが、これは１本の棒をはしごに取付けた
もので、ねぢれて倒れる危険があり、又昇降は１
方向からしか出来ない。本案では２方向から出来
る。 Another related item is the conventional three-legged ladder, but this is a ladder with a single rod attached to it, and there is a risk of it twisting and falling over, and it can only be ascended and descended in one step.
It can only be done from the direction. This project can be done from two directions.

[Brief explanation of the drawing]

第１図は開脚した脚立の立面図、第２図は開脚
した脚立を上から見た平面図で、は、脚柱、は、ちようばん、は、踏み
板、は、開き止め、である。 Figure 1 is an elevational view of the stepladder with its legs open, and Figure 2 is a top view of the stepladder with its legs spread. It is.

Claims

[Scope of utility model registration request]

Two ladder frames, narrow at the top and wide at the bottom, are attached to the pedestal with hinges so that the legs can be opened with the diagonal pedestal side as the axis. When the legs are opened, it becomes a triangular pyramid-shaped stepladder that can stand on its own, and when getting on and off, the two pillars connected by hinges are installed with the front side facing forward. Step on it alternately. A four-point support stepladder constructed like this.